4.6 Article

Anisotropic wetting and superhydrophobicity on holographically featured 3D nanostructured surfaces

Journal

SOFT MATTER
Volume 8, Issue 17, Pages 4567-4570

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c2sm07406k

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Funding

  1. Ministry of Science & Technology for Complementary Hybridization of Optical and Fluidic Devices for Integrated Optofluidic Systems.
  2. Brain Korea 21 Program

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Holographically featured SU-8 polymer surfaces exhibited anisotropic wetting by water droplets, due to liquid pinning at the edges of the top rods in 3D woodpile structures. Square nanopillar array surfaces (tip size, 30 nm) resulting from SF6 plasma treatment showed ultrahydrophobicity, with advancing and receding contact angles of 170 degrees.

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